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DE742331C - Use of copper alloys for welding electrodes and switch contacts - Google Patents

Use of copper alloys for welding electrodes and switch contacts

Info

Publication number
DE742331C
DE742331C DEN37166D DEN0037166D DE742331C DE 742331 C DE742331 C DE 742331C DE N37166 D DEN37166 D DE N37166D DE N0037166 D DEN0037166 D DE N0037166D DE 742331 C DE742331 C DE 742331C
Authority
DE
Germany
Prior art keywords
copper
boron
welding electrodes
switch contacts
alloy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEN37166D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Edelstahlwerke AG
Original Assignee
Deutsche Edelstahlwerke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche Edelstahlwerke AG filed Critical Deutsche Edelstahlwerke AG
Priority to DEN37166D priority Critical patent/DE742331C/en
Application granted granted Critical
Publication of DE742331C publication Critical patent/DE742331C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/222—Non-consumable electrodes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Contacts (AREA)

Description

Verwendung von Kupferlegierungen für Schweißelektroden und Schalterkontakte In dem Patent 736 395 wird die Verwendung einer Legierung zur Herstellung von Schalterkontakten oder Schweißelektroden beschrieben, die aus einer Kupfer-Cadmium-Legierung mit i bis io °/o C:admittm besteht. Es ist im Hauptpatent auch vorgesehen, zu dem gleichen Zweck der Kupfer-Cadmium-Legierung mit i bis io°/o Cadmium einen Zusatz von o,i bis 5 °/o Gold, Silber, Aluminium, Beryllium, Magnesium, Zinn zu geben.Use of copper alloys for welding electrodes and switch contacts The 736,395 patent discloses the use of an alloy to make switch contacts or welding electrodes are described, which are made of a copper-cadmium alloy with i until 10 ° / o C: admittm exists. The main patent also provides for the same Purpose of the copper-cadmium alloy with i to io% cadmium an addition of o, i to give up to 5 ° / o gold, silver, aluminum, beryllium, magnesium, and tin.

Mit der Erfindung wird eine erhebliche Verbesserung der für Kontakte und Schweißelektroden geeigneten Legierung erreicht, die insbesondere bei der Verwendung für Luftschalter von Bedeutung ist. Es wurde gefunden, daß ein Zusatz von Bor zu den im Hauptpatent 736395 verwendeten Cadmiumlegierungen neben einer Kornverfeinerung eine besonders günstige Einwirkung auf die Entionisierung des Lichtbogens ausübt. Die Kontakte bleiben durch den Borzusatz immer blank, da verhindert wird, daß Kupferoxyde auf den Kontaktflächen haftenbleiben. Die Lebensdauer solcher mitBorzusatz versehener Kontakte aus Kupfer-Cadmium-Legierungen wird dadurch .erhöht, ohne daß die Leitfähigkeit beeinträchtigt wird.The invention achieves a considerable improvement in the alloy suitable for contacts and welding electrodes, which is particularly important when used for air switches. It has been found that an addition of boron to the cadmium alloys used in the main patent 736395 has a particularly favorable effect on the deionization of the arc in addition to a grain refinement. The contacts always remain bare due to the addition of boron, as it prevents copper oxides from sticking to the contact surfaces. The service life of such contacts made of copper-cadmium alloys with the addition of boron is thereby increased without the conductivity being impaired.

Im nachstehenden seien beispielsweise Zusammensetzungen von verwendeten Legierungen angegeben: Kupfer .... 96.5 % Silber ..... 4 °/o Cadmium .. 3 °/u Cadmium .. i °,,'" Bor ....... 0,5 °/o Bor ....... 0,3 °/a. Kupfer ..... 94.,7 % The following are examples of the compositions of the alloys used: Copper .... 96.5 % silver ..... 4% Cadmium .. 3 ° / u Cadmium .. i ° ,, '" Boron ....... 0.5 ° / o Boron ....... 0.3 ° / a. Copper ..... 94th, 7 %

Claims (1)

PATENTANSPRÜCHE: i. Die Verwendung einer Legierung. bestehend aus Cadmium i bis io %, Bor o, i bis 5 %, Rest Kupfer, zur Herstellung von Schweißelektroden und Schalterkontakten. Die Verwendung einer Legierun":,# nach Anspruch i mit einem Zusatz von o,i bis 5 o-/, an Gold, Silber, Aluminium, Beryllium, Magnesitun und Zinn einzeln oder zu mehreren für den im Anspruch i genannten Zweck. 3. Die Verwendung einer Legierung. bestehend aus 96,5 % Kupfer, 3 °2 a Ca:dmium, o, 5 % Bor, für den im Anspruch, i genannten Zweck. 4. Die Verwendung einer Legierung, bestehend aus 94,7 0lo Kupfer, q. °% Silber, i % Cadmium, 0,3 % Bor, für den im Anspruch i genannten Zweck. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschriften .... Nr. 515 8o5, 551368; französische Patentschrift ... Nr.7186o8.PATENT CLAIMS: i. The use of an alloy. Consists of cadmium 1 to 10 % , boron 0.1 to 5%, the remainder copper, for the production of welding electrodes and switch contacts. The use of an alloy ":, # according to claim i with an addition of o, i to 5 o- /, of gold, silver, aluminum, beryllium, magnesite and tin individually or in groups for the purpose mentioned in claim i. 3. The use of an alloy consisting of 96.5 % copper, 3 ° 2 a Ca: dmium, 0.5% boron, for the purpose mentioned in claim I. 4. The use of an alloy consisting of 94.7% copper , q. °% silver, i% cadmium, 0.3% boron, for the purpose stated in claim I. To distinguish the subject matter of the application from the state of the art, the following publications were considered in the granting procedure: German patents .... No. . 515 8o5, 551 368; French patent specification ... No 7186o8.
DEN37166D 1934-09-13 1934-09-13 Use of copper alloys for welding electrodes and switch contacts Expired DE742331C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEN37166D DE742331C (en) 1934-09-13 1934-09-13 Use of copper alloys for welding electrodes and switch contacts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN37166D DE742331C (en) 1934-09-13 1934-09-13 Use of copper alloys for welding electrodes and switch contacts

Publications (1)

Publication Number Publication Date
DE742331C true DE742331C (en) 1943-11-29

Family

ID=7347452

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN37166D Expired DE742331C (en) 1934-09-13 1934-09-13 Use of copper alloys for welding electrodes and switch contacts

Country Status (1)

Country Link
DE (1) DE742331C (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE515805C (en) * 1927-12-04 1931-01-14 Aladar Pacz Dr Process for the production of very fine-grained copper alloys with a low content of aluminum, silicon and iron
FR718608A (en) * 1930-06-15 1932-01-27 Durener Metallwerke A G Bronze particularly applicable to the manufacture of electrodes
DE551368C (en) * 1928-03-04 1932-11-25 Metallhuettenwerke Schaefer & Bronze alloy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE515805C (en) * 1927-12-04 1931-01-14 Aladar Pacz Dr Process for the production of very fine-grained copper alloys with a low content of aluminum, silicon and iron
DE551368C (en) * 1928-03-04 1932-11-25 Metallhuettenwerke Schaefer & Bronze alloy
FR718608A (en) * 1930-06-15 1932-01-27 Durener Metallwerke A G Bronze particularly applicable to the manufacture of electrodes

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